Can u boot from Safe mode?
Did u installed Drivers for Graphics and Sound aftrer the installation?
If a real-mode driver and a protected-mode driver are in conflict.
If the registry is damaged.
If either the Win.com file or the Command.com file are infected with a virus, or if either of the files are damaged.
If a protected-mode driver is loaded from the System.ini file and the driver is already initialized.
If there is a physical input/output (I/O) address conflict or a random access memory (RAM) address conflict.
If there are incorrect complementary metal oxide semiconductor (CMOS) settings for a built-in peripheral device (such as cache settings, CPU timing, hard disks, and so on).
If the Plug and Play feature of the computer's basic input/output system (BIOS) is not working correctly.
If the computer contains a malfunctioning cache or malfunctioning memory.
If the computer's motherboard is not working properly.
If you installed Microsoft Office 97 and you are using the Novell Client 32 software.
Microsoft gives above possible causes for the error......
Boot into SAFE mode and do try this:-
1] if u have installed Graphics/VGA Drivers, then uninstall it in Safe mode.
2] uninstall Audio drivers.
3] Perform SFC, go to Start> Run and type
sfc and press Enter.
4] Perform Registry Check, do this, Go to Start> Programs> Accessories> System Tools> System Information. In System Information, clikc Tools Menu and from there click Registry Checker.
5] Run ScanDisk.
Reboot in Normal mode and check for errors.
u better check the Win98 CD for the presence of viruses.